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Woodward's Series 723Plus Digital Controller 8280-1056 features integral load sharing and soft loading and unloading, automatic breaker opening, as well as compatibility with DSLC Digital Synchronizer and Load Control.



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  • Part Number: 8280-1056
  • SKU: 82801056WO
  • Manufacturer: Woodward
  • Series: 723 and 723PLUS Digital Control

8280-1056 Technical Specifications

Weight 6lbs 8oz (2.95kg)
Storage Temperature –55 to +105 °C (–67 to +221 °F)
Power Consumption Nominal 40 Watts
Operating Temperature –40 to +70 °C (–40 to +158 °F)
Chassis Sheet Metal for Hazardous Locations
Manual 26310
Humidity Standard 95% at +20 to +55 °C (+68 to +131 °F)
Dimensions (in) 16.25W x 11.5L x 2.375H (cm) W41.275 x L29.21 x H6.0325

Product Description

8280-1056 is a digital control unit for redundant load sharing. This unit is one of the available models in Woodward’s 723PLUS Digital Control series, with load sharing done over the company’s digital communications medium, “Control LON.” Redundancy is achieved by using two LON ports, with data repeated on each LON network.

723PLUS model 8280-1056 supports load sharing for up to six engines on up to two buses. For the system to work correctly, a unique LON address is required for each engine. There are four main parameters exchanged via the LON network connection:

  • generator kW load in %
  • bus tiebreaker status
  • generator circuit breaker status
  • bus selected either by discrete input E or software setting

Control functions available with this unit include Speed Sensing, Speed Control, Speed Reference, Fuel Limiters (Start Fuel Limiter & Maximum Fuel Limiter), Auxiliary Outputs (three 4-20mA), Generator Control (Isochronous and Droop), Jump Rate Limiter, Alarms, and Load Sharing (via LON).

Speed-sensing on the 8280-1056 control is done by one or two-speed sensors. These sensors can be either magnetic pickups (MPUs) or proximity probes. In the event an overspeed (above 2000 rpm) or underspeed (15 rpm) condition is detected, a speed fault is indicated by LED. There are two types of alarms on the 723PLUS controls, major alarms, and minor alarms. Both overspeed conditions and a failure of both speed sensors will always trigger a major alarm.

More information on the 723PLUS model 8280-1056 control, including I/O details and configurable parameters, can be found in Woodward Application Manual 26310 and Hardware Manual 02877.

Reviews For 8280-1056

Internal Review

Model 8280-1056 is a durable controller suitable for any factory's hazardous environment. While we have tested previously in-stock units for functionality, current market availability makes a direct replacement difficult. Reach out to our sales team via phone or email for other possible solutions. - AX Control Tech Team

Repair Services For 8280-1056

Type Lead Time Price Action
Repair Service 1-2 weeks $1805

Our highly skilled technicians can repair your 8280-1056. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More